You have learned that asynchronous programming, and asyncio specifically, can drastically improve the execution of your communication channels. You have also seen the specific methods that you will need to use when implementing an asynchronous communication channel. Before we dive into a working example in Python, let us briefly discuss the big picture of what we are trying to accomplish – or, in other words, the general structure of our program.

As mentioned earlier, we need to implement a subclass of asyncio.Protocol to specify the underlying organization of our communication channel. Again, there is an event loop at the heart of each asynchronous program, so we also need to create a server outside of the context of the protocol class, and initiate that server inside of the event loop of our program. This process will set up the asynchronous architecture of our entire server, and can be done via the asyncio.create_server() method, which we will look at in our upcoming example.

Finally, we will run the event loop of our asynchronous program forever by using the AbstractEventLoop.run_forever() method. Similar to an actual, real-life server, we would like to keep our sever running until it encounters a problem, in which case we will close the server gracefully. The following diagram illustrates this whole process: